I picked up a pair of these in an antique store a few years back and have always meant to post on here for info...voila! They are 8x30 EV and designated "FALKE" with a s/n 289380. Anyone have an idea of their age? Other info? Obviously birding optics, with a center focuser and a right side diopter. In great shape, just a few nicks. Got the case too, but I suppose the leather strap for it has gone the way of the DoDo bird.